Sergio Fonseca
Sr Intelligence & Analytics Technical Advisor at Microsoft
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolSergio Fonseca is an Azure Synapse Analytics Technical Advisor with nine years focused on SQL Server and cloud data platform support, currently based in São Paulo. At Microsoft he progressed from Premier Field Engineer to technical advisor, specializing in Azure Synapse, Azure SQL DB, Fabric Data Warehouse and connectivity troubleshooting. He leads vendor management, case triage and SLA-driven queue operations while mentoring teams and authoring internal troubleshooting guides and public connectivity tools like the Azure Synapse Connectivity Checker. Sergio’s background in hands-on SQL Server internals, performance tuning and proactive engagements with large financial and public sector customers informs a pragmatic, customer-first approach to incident escalation and root-cause analysis. Fluent in network-level diagnostics (Wireshark/DNS/Azure AD) and automation with PowerShell, he blends deep database expertise with cloud networking savvy. Known for reducing backlogs and improving CX through structured case review and care calls, he pairs technical depth with operational leadership.
9 years of coding experience
8 years of employment as a software developer
Mackenzie Presbyterian University
Portuguese, English
Github Skills (19)
microsoft10
tsql10
microsoft-azure10
azure-sql10
sql-server-data-tools10
sql-server10
script10
sql10
arm10
microsoft-sql-server10
powershell10
azure10
ssms10
database10
azure-synapse9
Programming languages (5)
Github contributions (5)
microsoft/Azure-Synapse-Connectivity-Checker
Jun 2023 - Jun 2026
A script that can be used to test connectivity with all multiple Synapse endpoints needed (SQL, SQLOndemand, Dev) and return additional information that can be used to open a support case
Contributions:7 releases, 1 review, 3 PRs in 3 years
sql
FonsecaSergio/azure-docs
Jul 2018 - Apr 2023
Contributions:10 pushes in 4 years 9 months
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